hoco epb04 universal business bluetooth v4.1 headphone earphone mic wireless headphones blutooth

hoco epb04 universal business wireless bluetooth v4.1 headphone earphone.features:.compatible with most of smartphone like for xiaomi, for iphone, for samsung, for huawei, etc..the headphone can connect to two devices..support to display battery level on ios system and some android smartphones..noise canceling fucntion..operation guide:.pairing:.dont let it go after power switch, keep press to enter pairing mode(red and blue light flash alternately). aterwards, smartphone can search the headphon